Dynamic studies on nutrient uptake by crop plants. 9. The uptake of potassium, phosphate and ammonium by barley seedlings as influenced by 2,4-dinitro-phenol.

Mitsui, S.; Kumazawa, K.

J. Sci. Soil Tokyo 26: 241-244


Accession: 013689000

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The uptake of O2 by barley seedlings in water cultures was increased by 10-4 mol DNP, and much reduced by 10-2 mol NaN3. The reduction of P uptake in similar amounts by 10-4 mol DNP and 10-2 mol NaN3 was attributed to the inhibition of oxidative phosphorylation. Reduction of P uptake by the roots was accompanied by P excretion.